Considerable knowledge of office procedures, record keeping system, forms correspondence, reports and other materials common to operation of a police department; police dispatching procedures and the laws and regulations governing the use of dispatching equipment in a law enforcement agency; agencies involved with police activities; Penal Code, Vehicle Code, and local municipal code; 911 system and TDD Deaf Translation System; computerized systems used in municipal law enforcement agencies. Dispatches, as necessary, police units in response to calls for service or request from officers in the field; uses law enforcement terminology and cites Code sections by number; calls public and private agencies, such as allied law enforcement, hospitals, towing services, and utilities and requests mutual assistance when necessary.